No, not "as", but rather "actually" describing physical realities.
Jesus, in John 3, is speaking to Nicodemus about the need of being born again, because all mankind upon this world, needs to be born again, to even begin to understand the matters of the Spirit of God, and of the ways of the Kingdom of God. The Carnal mind cannot grasp the things of the Spirit.
Romans 8:7 KJB - Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be.
How then, could the dead mind, understand the living realities that Christ Jesus wanted to demonstrate, unless it was born from above, being born again, by water and the Spirit? It couldn't. The "earthly things" was the need to be born again, for only those upon this earth needed it. Those who remained loyal to God, in the Heavenly, need it not, having never fallen.
Our carnal minds/hearts, unless born again, would continually dwell upon things of this world, the fallen sinful ways, and could never even for a second have begun to contemplate an heavenly thought, unless sent from above and given from God. Mankind could not ever have come up with the solution for salvation as it is in Christ Jesus, for it is of Heavenly origins, and need to come down from Heaven to enlighten the darkened heart.
However, the mind/heart of Christ Jesus, was
always upon Heavenly things, specifically upon His Father, thus He could say while living upon this fallen world, that He was in Heaven [not physically, but of the mind/heart, He alway dwelt upon the will of the Father and His heart].
John 3:13 KJB - And no man hath ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven.
But we now, granted repentance, need to be like Jesus, rather than what we were before life in Christ:
Ephesians 2:5 KJB - Even when we were dead in sins, hath
quickened us together with Christ, (by grace ye are saved
Ephesians 2:6 KJB - And hath
raised us up together, and made us sit together in heavenly places in Christ Jesus:
Philippians 3:19 KJB - Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)
Philippians 3:20 KJB - For our conversation is in heaven; from whence also we look for the Saviour, the Lord Jesus Christ:
Thus:
Philippians 2:5 KJB - Let this mind be in you, which was also in Christ Jesus:
That is a misunderstanding and misuse of that text, for it refers not to time in general, but to the portion of the prophetic time that had been "sealed" in the books of Daniel:
Daniel 12:4 KJB - But thou, O Daniel, shut up the words, and seal the book, even to the time of the end: many shall run to and fro, and knowledge shall be increased.
Revelation 10:2 KJB - And he had in his hand a little book open: and he set his right foot upon the sea, and his left foot on the earth,
That portion of Daniel's prophecies concering the 2,300 prophecy in Daniel 8:13,14,26, etc that had been sealed back then, was then in Revelation 10:2 unsealed, and able to be understood, and that prophetic time would no longer be a test for the people of God. The one speaking in Daniel is Jesus, and the one who came down in Revelation 10, is also Jesus. Look at the descriptions.
Time will continue in eternity:
Isaiah 66:22 KJB - For as the new heavens and the new earth, which I will make, shall remain before me, saith the LORD, so shall your seed and your name remain.
Isaiah 66:23 KJB - And it shall come to pass, that from one new moon to another, and from one sabbath to another, shall all flesh come to worship before me, saith the LORD.
Revelation 22:2 KJB - In the midst of the street of it, and on either side of the river, was there the tree of life, which bare twelve manner of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations.
Sun and Moon and rotation of the earth will continue for all time. Though in the New Jerusalem there will be no "need" of the Sun, etc for light, for God HImself will be the greater light, outshining His creation as Creator:
Revelation 22:5 KJB - And there shall be no night there; and they need no candle, neither light of the sun; for the Lord God giveth them light: and they shall reign for ever and ever.
Isaiah 24:23 KJB - Then the moon shall be confounded, and the sun ashamed, when the LORD of hosts shall reign in mount Zion, and in Jerusalem, and before his ancients gloriously.
Isaiah 60:19 KJB - The sun shall be no more thy light by day; neither for brightness shall the moon give light unto thee: but the LORD shall be unto thee an everlasting light, and thy God thy glory.